Underhung crane manufacturing

Underhung cranes are employed where the build allows the installation of crane runways. The capacity of the suspension crane must be selected considering the impact of the crane load and the runway load on the build. The maximum load capacity of these cranes can reach up to 10 t, the maximum span up to 24 m. Based on the amount of runway beams there are single-span and double-span suspension cranes. Ambient temperatures can range from -20°C to +40°C.

Underhung cranes are operated from the ground via cable-connected control pendant or radio remote control. In addition, double control is possible by switching control from control pendant to radio remote control, and vice versa. Cranes can be equipped with one or two hoists based on the number of hoists used.

Underhung cranes are cost-efficient and lightweight. Their compact and lightweight design requires less building space and ensures efficient use of the building height.

These cranes are supplied with a hook, magnet or vacuum beams.

1. Lifting capacity	Q = max 25 t
2. Span	La = max 24 m
3. Base	A = relative to La
4. Right brackets length	Ld = max 1,5 m
5. Left brackets length	Lk = max 1,5 m
6. Hook height	H = max 50 m
7. Extreme positions of the hook	L1 and L2 = relative to the hoist design
8. Distance between the runway rail and the hook	H1 = relative to the bridge and hoist design
8. Distance between the runway rail and the bridge	H2=relative to the bridge and trolley design
9. Operating mode (FEM / ISO 4301/1)	1Am (M3) to 4m (M7)
10. Operating speeds:
– lift speed	max 10 / min 0,5 m / min
– hoist travel speed	20 / 5 m /min
– crane travel speed	max 40 / min 8 m/min
11. Power supply	400 V
12. Control voltage	48 V
13. Frequency	50 Hz
14. Operating temperatures	-20ºC ÷ +40ºC
15. Crane control	via cable-connected control pendant or radio

1. Lifting capacity

Q = max 25 t

2. Span

La = max 24 m

3. Base

A = relative to La

4. Right brackets length

Ld = max 1,5 m

5. Left brackets length

Lk = max 1,5 m

6. Hook height

H = max 50 m

7. Extreme positions of the hook

L1 and L2 = relative to the hoist design

8. Distance between the runway rail and the hook

H1 = relative to the bridge and hoist design

8. Distance between the runway rail and the bridge

H2=relative to the bridge and trolley design

9. Operating mode (FEM / ISO 4301/1)

1Am (M3) to 4m (M7)

10. Operating speeds:

– lift speed

max 10 / min 0,5 m / min

– hoist travel speed

20 / 5 m /min

– crane travel speed

max 40 / min 8 m/min

11. Power supply

400 V

12. Control voltage

48 V

13. Frequency

50 Hz

14. Operating temperatures

-20ºC ÷ +40ºC

15. Crane control

via cable-connected control pendant or radio